Mechanical charging device



FIG. 1 is a top perspective view of a mechanical charging device showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a top rear perspective view thereof;

FIG. 9 is a top rear perspective view shown in an environment of use; and,

FIG. 10 is a second top rear perspective view shown in an environment of use. 

CLAIM The ornamental design for a mechanical charging device, as shown and described. 